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Reducing the Contention Experienced by Real-Time Core-to-I/O Flows over a Tilera-Like Network on Chip

Abdallah, Laure and Jan, Mathieu and Ermont, Jérôme and Fraboul, Christian Reducing the Contention Experienced by Real-Time Core-to-I/O Flows over a Tilera-Like Network on Chip. (2016) In: 28th Euromicro Conference on Real-Time Systems (ECRTS 2016), 5 July 2016 - 8 July 2016 (Toulouse, France).

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Official URL: https://doi.org/10.1109/ECRTS.2016.9

Abstract

Many-core architectures are promising hardware to design real-time systems. However, the worst-case behavior of the Network-on-Chip (NoC) for both core-to-core and core-to-Input/Output (I/O) communications of critical applications must be established. The mapping over the NoC of both critical and non-critical applications has an impact on the network contention these critical communications exhibit. So far, all existing mapping strategies have focused on core-to-core communications. However, many-cores in embedded real-time systems will be integrated within backbone Ethernet networks, as they mostly provide Ethernet controllers as I/O interfaces. In a previous work we have shown that Ethernet packets can be dropped due to an internal congestion in a Tilera-like NoC. In this work, we describe and evaluate a mapping strategy for such Tilera-like NoCs that minimizes the contention of core-to-I/O critical flows in order to solve this problem. Experimental results on real avionics applications show significant improvements of core-to-IO flows transmission delays, without significantly impacting transmission delays of core-to-core flows.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
Université de Toulouse > Université Toulouse 1 Capitole - UT1 (FRANCE)
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Deposited By: IRIT IRIT
Deposited On:22 Feb 2019 10:52

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